DE19613460C2 - Electronic security door lock for a locking system - Google Patents

Description

The invention relates to a door lock arrangement according to the upper Concept of claim 1.

Such an arrangement is known from DE 36 02 989 A1.

In the known arrangement, it is disadvantageous that the cylinder core is relatively short. This will make the break-in Security of the generic arrangement adversely affected flows.

The invention has for its object a generic To improve the door lock arrangement so that this with simple means the greatest possible security against burglary and offers unauthorized use.

This object of the invention is achieved by a Door lock arrangement with the features of claim 1 ge solves.

In other words, the invention proposes the cylinder core to train over the entire length of the castle. To this Way it is easily possible to have two independently stored locking elements to use, each on act on the cylinder core, the locking elements are stored independently of each other so that they are in favor an optimal space economy in the desired places can be arranged apart, but the same address early when using the correct key, see above that for the user a simple despite the increased security  Operating sequence like a normal lock becomes.

The formation of the cylinder core over the entire length of the The lock on the one hand brings about the improved mechanical Resilience, it also advantageously allows that the entire lock-side electronics to legitimize one inserted key only inside the cylinder core can be arranged. So this electronics is in front mechanical influences very well protected.

The two interlocking locks elements can advantageously oppose each other when ver lock or be moved when releasing the cylinder core. This is an additional security against unauthorized persons Influence on the lock given: If by vibrators or other tools the movement of one lock tion element is forced into its release position, so the other lock is automatically activated at the same time led element in its locking position.

Furthermore, for functional reliability of the door lock arrangement be provided that the user with decreasing energy in the energy storage to this falling energy level is made noticeable. That way, a timely Charging the energy storage can be made so that it is ensured for the user that he is free at all times operate the door locks intended for its use can. By using a delay circuit in the Operating the lock is also possible without optical aids or other aids that take additional energy from the ener would consume the memory, the user notices that declining energy level in energy storage made clear.  

An embodiment of the invention is based on the drawing tion explained in more detail below. It shows

Fig. 1 is a front view of a lock arrangement on a door lock,

Fig. 2 is a schematic longitudinal section through the castle of Fig. 1 and

Fig. 3 is a key associated with the lock of Fig. 1 and 2.

The lock has a housing 1 with a cylinder core 2 rotatably or pivotably mounted therein. The cylinder core 2 has an insertion opening 3 for a key 10 .

Within the castle, as can be seen in particular from FIG. 2, two mechanical inserts in the form of steel pins 4 are provided, which prevent drilling of the castle 4 or at least considerably complicate it. The two Stahlstif te 4 are shown purely by way of example, differently shaped or made of other materials mechanical inserts can be provided for the same purpose, but possibly elsewhere, within the housing 1 .

Furthermore, there are two electric magnets 5 within the lock, which act on pivotably mounted locking means 6 . Between the electromagnet 5 and the two locking elements 6 there is a mounting hole 7 , so that the lock can be attached in a known manner within a door. Also from the outer dimensions, the lock corresponds to the usual DIN dimensions, so that no special productions are required for installation in doors.

The lock comprises, in a manner known per se, in the area of the cylinder core 2 an integrally formed locking bit 8 . Furthermore, the cylinder core 2 comprises a microprocessor 9 , which comprises an electronic circuit for evaluating data and which is operatively connected to the electromagnet 5 .

The key 10 comprises an electrical energy store 11 , which can be configured as a battery, accumulator, capacitor or the like. Furthermore, the key 10 comprises a chip or a microprocessor 12 which contains data on the locking authorization of the key 10 for the associated lock. Finally, the key 10 comprises a plurality of electrical contact surfaces 13 , which are assigned corresponding contact surfaces 14 in the cylinder core 2 .

When the door lock arrangement is actuated, the key 10 is first inserted into the insertion opening 3 until the contact surfaces 13 of the key 10 contact the contact surfaces 14 of the lock. Another insertion movement of the key 10 causes friction between the contact surfaces 13 and 14 and thus self-cleaning, so that good electrical conductivity between the contact surfaces 13 and 14 is ensured.

The microprocessor 9 of the lock is provided with energy by the electrical energy storage 11 of the key 10 . He reads the electronic data of the chip or the microprocessor 12 and switches the present locking authorization of the key 10 for the lock, the electric magnets 5 , so that these, powered by the energy of the energy store 11 , the pivoting Ver locking elements 6th pivot and move from their locked position to their release position in which the ends of the locking elements 6 shown in FIG. 2 above release the cylinder core 2 for a rotary movement.

Each locking element 6 therefore acts with its assigned electromagnet 5 as a separate unit. However, both locking elements 6 are actuated jointly by the microprocessor 9 simultaneously "unlocking" both locking elements 6 . Deviating from the illustrated embodiment, a single actuating means in the form of a single electromagnet, a rack or the like could also be provided, which actuates both locking elements simultaneously.

By pivoted into their release position Verriege treatment elements 6 , it is possible in the further course of use to turn the key 10 and thus to rotate the cylinder core 2 within the housing 1 . A mechanical loading of the locking means locking the door can now be carried out by the key 10 , so that the energy present in the energy store 11 does not have to be used for unlocking the entire door, but only for unlocking the lock inside the door, and a correspondingly longer useful life for the energy content of the energy storage 11 results.

In a modification of the described mode of operation can be seen that the evaluation of the locking authorization is not carried out in the microprocessor 9 of the lock, but in the microprocessor 12 of the key 10th The microprocessor 9 of the lock can be assigned a memory which contains the numbers of the electronic keys authorized to lock in the electronic lock. After inserting an electronic key, the supply voltage, as described above, is applied to the electronics in the lock. As soon as this electronics is ready for use, the data is read from the inserted key. In a first step, the organizational data of the lock and key are compared with each other, e.g. B. whether the key is associated with the existing locking system. If the result is positive, it is determined whether the key number of the key 10 is authorized to lock in the memory chip of the lock. If there is also a positive result, the microprocessor 9 switches the electromagnets 5 via a switching stage, so that - as described above - the lock is unlocked and the cylinder core 2 is released for the rotary movement.

An additional memory module can be provided in the castle be, which the operations of the lock and the thereby used key registered, where appropriate, a time is also registered. This way the door lock arrangement used as a time-related locking authorization will.

Compared to conventional locking systems, the Programmable door lock arrangement according to the invention Programming late. When planning a building therefore does not have to have the complete locking structure before completion of construction.

If a key is lost, it is also the invention contemporary door lock arrangement possible in a simple manner Authorization to lock the lock for the lost Key lock by the corresponding memory entry is changed in the castle. That way, with a lot the security of the locking system a key loss can be secured. In addition, none fall  Cost of issuing new keys, of exchanging Locks or similar extensive maintenance costs the security function of the entire locking system.

The microprocessor 12 in the key 10 may include, in addition to the key number and other organizational numbers, a program for data transmission to the lock and an algorithm in connection with a table which is provided in the lock and which serves to encrypt the data. In this way, an illegal reading of the data and since by copying or copying the data from the electronic key 10 can be prevented.

In the illustrated embodiment, the key 10 may include four contact surfaces 13 , e.g. B. a negative contact, a positive output contact, a positive input contact and a contact for data transmission. In such a case, the supply voltage of the energy store 11 is not directly connected to the microprocessor 12 within the key 10 , but is returned through the positive input contact into the key 10 when the key 10 is inserted into the lock. In this way, the battery is only loaded with the processor in the electronic key when necessary. The associated lock also has four contacts on both insertion sides.

It can advantageously be provided to make the user of the falling power of the energy store 11 recognizable by means of a display. An optical or acoustic display is possible, but has the disadvantage that with a lower energy content of the energy store 11, this small residual energy is additionally burdened. It can therefore be advantageous to see in the electronic circuit a delay circuit which, when falling below a certain threshold value, for example a certain operating voltage of the energy store 11 , causes a time-delayed release, that is to say the two electromagnets 5 are released with a time delay . This can take place in several stages, that is to say with an increasingly longer delay depending on low energy in the energy store 11 . In this way, the user is made aware of the possibility of delayed actuation of the lock so that he can replace or charge the energy store 11 in good time.

Within the electronic evaluation of the data of the key 10 and the lock, provision can be made for the memory which contains the access authorizations for the lock and key to be addressed directly. In this way, the memory can be significantly reduced and it can be achieved a considerably faster response time for unlocking the lock than when, for example in large companies, memory entries for the entire workforce have to be searched.

In the illustrated embodiment, the entire lock-side electronics for legitimating an inserted key is inside the cylinder core 2 . In this way, there is sufficient space in the lock below the cylinder core for arranging security elements, such as the steel pins 4 or more locking elements 6 , for example, so that these security elements of the lock can be dimensioned in a sufficiently stable manner.

Claims (4)

1. door lock arrangement for a locking system, with a lock and a key,
the lock has a lock cylinder with a rotatable cylinder core, and an insertion opening for the key,
as well as electrically operable locking means which can be moved from a blocking position into a release position,
as well as electrical actuating means for driving the latch means,
as well as an electronic circuit for information processing,
wherein the circuit with the actuating means is effectively connected, and
the key comprising a memory and / or a microprocessor for electronically coded information on the access authorization to the lock, and
connection means for data transmission between the lock and key being provided, and
wherein an energy store is provided to supply the electronic circuit and the actuating means, and
wherein the locking means are monostable in their locked position, and
the connecting means being designed as electrical conductors,
and the energy store is arranged in the key,
characterized by
that the locking means in the lock are designed as at least two locking elements ( 6 ) mounted independently of one another, which act on the cylinder core ( 2 ) and can be driven together by the actuating means (electromagnets 5 ),
and that the cylinder core ( 2 ) extends over the entire length of the lock. 2. Door lock arrangement according to claim 1, characterized in that the entire lock-side electronics for legitimating an inserted key ( 10 ) is arranged within the cylinder core ( 2 ). 3. Door lock arrangement according to claim 1 or 2, characterized in that the locking elements ( 6 ) are mounted in opposite directions when actuated by the actuating means (electromagnets 5 ). 4. Door lock arrangement according to one of the preceding claims, characterized by an electronic circuit for evaluating the energy content of the energy store ( 11 ), this evaluation circuit being connected to an electronic circuit which comprises a delay element and wherein this electronic circuit is a function of a smaller amount Energy content of the energy store ( 11 ) causes an increasing delay until the activation of the actuating means (electromagnets 5 ).